Gies, J., & Gies, F. (1979). Life in a medieval castle (1st Harper colophon ed.). Perennial Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGies, Joseph, और Frances Gies. Life in a Medieval Castle. 1st Harper colophon ed. New York: Perennial Library, 1979.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGies, Joseph, और Frances Gies. Life in a Medieval Castle. 1st Harper colophon ed. Perennial Library, 1979.
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